Originally Posted by M3PO
IIRC, there are check valves that are supposed to keep the VANOS pressurized.
I had to look up what IIRC stood for, lol..
Can you post the repair order from when they did the work on your car? I would like to see it and provide it to my dealer for when they investigate this further.
The noise only bugs me if it will cause issues down the line. That would be the only reason why I would have it addressed. Engine operation is flawless besides this stupid noise...